Journal
TRAC-TRENDS IN ANALYTICAL CHEMISTRY
Volume 75, Issue -, Pages 129-140Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.trac.2015.07.003
Keywords
Metal-based nanoparticles; Availability; Detection; Extraction; Analysis
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Funding
- European Funds through COMPETE
- National Funds through the Portuguese Science and Technology Foundation (FCT) [PEst-C/MARM0017/2013]
- FCT [IF/01637/2013]
- Programa Operacional Factores de Competitividade - COMPETE [FCOMP-01-0124-FEDER-02800 (FCT PTDC/AGR-PRO/4091/2012)]
- Fundação para a Ciência e a Tecnologia [PTDC/AGR-PRO/4091/2012] Funding Source: FCT
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In this study, the reactions of engineered nanoparticles (ENPs) in soils, with respect to their nanospecific properties, and observed effects of key soil properties (e.g. pH, ionic strength and natural colloids) on their stability in pore water are discussed. Key processes include aggregation and dissolution of ENPs, straining of ENPs in the solid matrix, stabilization of ENPs in pore water due to binding of molecules from dissolved organic matter (DOM) and inorganic colloids and the effect of artificial coatings. In view of these processes, this study provides guidance in the development of a framework to measure available and total soil contents of ENPs, via a set of extraction methods and advanced analytical tools. Particularly, the lack of effective extraction methods is thoroughly discussed regarding the identification of most relevant research gaps preventing an effective assessment of the availability, mobility and risks of exposure of sensitive receptors to ENPs in soils. (C) 2015 Elsevier B.V. All rights reserved.
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